Santos Bonacci believes that these tribes refer to the twelve signs of the zodiac. So, the tribes refer to all human beings who are or were born on earth during the 12 months of the year.
https://www.youtube.com/watch?v=yjkyrQcQzEg https://www.youtube.com/watch?v=yjkyrQcQzEg If there are ETs or other human beings in the universe, IMO these entities can be classified according to various sectors of the skies that belong to each zodiac sign. Specifically, if there are ETs in the star group of Pleiades, they would belong to the sign of Taurus since the star group is located in this constellation.